Sanjiv Ahuja, Chairman and CEO of LightSquared delivers his keynote address at the International CTIA wireless industry conference in Orlando, Florida March 23, 2011. Best Buy Co Inc will sell wireless services using a network being built by LightSquared, said the chief executive from the Harbinger Capital-backed telecommunications start-up. REUTERS/Scott Audette (UNITED STATES - Tags: BUSINESS SCI TECH)